Apparatus for drilling holes in ice



y 9 N. J. GERLIKOWSKI APPARATUS FOR-DRILLING HOLES IN ICE.

Filed May 13, 1957 I IN VEN TOR m1! fizz/09711 ATTORNEYS 2,893,695 APPARATUS FOR DRILLING HOLES IN ICE Norbert J. Gerlikowski, Green Bay, Wis. Application May 13, 1957, Serial No. 658,621 '1 Claim. (Cl. 255-50) The present invention relates to apparatus for drilling holes in ice, and more particularly to a fishermans ice drill.

The primary object of the invention is to provide a device for efficiently drilling large sized holes through the winter ice covering lakes and ponds so that fishing tackle can be lowered through the ice.

Another object of the invention is to provide a drill for ice of the class described above, which is power driven, readily portable, and which will drill a hole through the ice quickly and effectively.

A further object of the invention is to provide an ice drill of the class described above having an electric motor operated from the direct current electric system of a motor vehicle.

A still further object of the invention is to provide an ice drill of the class described above which is inexpensive to manufacture, readily assembled, and which can be easily disassembled for sharpening when the drill edges become dull.

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings, in which:

Figure 1 is a side elevation of the invention.

Figure 2 is a horizontal cross-section taken along the line 22 of Figure 1, looking in the direction of the arrows.

Figure 3 is a perspective view of one of the cutter blades.

Referring now to the drawings in detail wherein like reference characters indicate like parts throughout the several figures, the reference numeral indicates generally an ice drill constructed in accordance with the invention.

The ice drill 10 comprises an electric motor 11 of a 6 volt or 12 volt automobile starter motor type. A handle plate 12 is secured to the lower end of the motor 11 by any suitable means (not shown) and is provided with pipe coupling handle sockets 13, 14 arranged in diametric opposed relation and secured to the plate 12 by any suitable means, such as welding or the like. Pipe handles 15 are threaded into the couplings 13 and 14, respectively, to provide handles for the motor 11 of any desired length. The motor 11 has a vertical shaft 16 projecting from the lower end thereof through the plate 12 to which is secured a tubular coupling 17 by means of a set screw 18.

A shaft 19 of somewhat greater diameter than the shaft 16 is secured in the end of the coupling 17 opposite the shaft 16 by means of a set screw 20. At a tubular sleeve 21 is mounted on the lower end of the shaft 19 by means of set screws 22.

A pair of oppositely disposed inverted L-shaped arms 23 and 24 are secured in radially opposite relation to the tubular sleeve 21 intermediate the upper and lower ends thereof. The L-shaped arms 23, 24 extend generally parallel to each other and have a circular plate 25 se cured to their lower ends 26, 27 by means of welding or the like, with the plate 25 extending perpendicularly to the shaft 19. The plate 25 is provided with a central vertical bore 28. A segmental shaped opening 29 extends from the bore 28 to the peripheral edge 30 of the plate 25, as best shown in Figure 2.

A block 31 is mounted on the upper surface of the States Pater Patented July 7, 1959 plate 25 and secured thereto by welding or the like adjacent one edge of the segmental opening 29. The block 31 has the face thereof adjacent the segmental opening 29 bevelled upwardly and outwardly as shown at 32, as best seen in Figure l.

A triangular guide blade 33 is positioned centrally of the plate 25 projecting through the bore 28 and has the opposite side edges thereof bevelled as at 34 to provide a sharpened cutting edge. The triangular blade 33 is welded or otherwise secured to the plate 25.

An elongated cutter blade, generally indicated at 35, is provided with a serrated cutting edge 36 and a pair of slots 37 extending perpendicularly to the cutting edge 36 through the opposite side edge 38 thereof. A pair of securing bolts 39 extend into the surface 32 of the block 31 through the slots 37 and secure the blade 35 to the plate 25 so that the cutting edge 36 extends through the segmental opening 29 to a position below the plate 25, and may be vertically adjusted as desired. The blade 35 can be replaced for varying the size of the hole to be bored in the ice.

The blade 35 has its outer end edge 40 arcuately curved to permit its passage through the core bored in the ice as the device is used.

An electrtic switch 41 is mounted to the end of the pipe coupling sockets 13 to permit the power supply to the motor 11 to be controlled from adjacent the handle 15.

In the use and operation of the device, the shaft 19 is held vertical with the triangular cutter blade 33 engaged with the ice. Power is supplied to the motor 11 and the shaft 19 and plate 25 suspended therebelow are caused to rotate in a counter-clockwise direction, as viewed in Figure 2, so that the cutting edge 36 of the blade 35 drills its way downwardly through the ice.

The slots 37 permit the cutter blade 35 to be adjusted for height as well as to accommodate for wear as the blade becomes worn away.

Having thus described the preferred embodiment of the invention, it should be understood that numerous structural modifications and adaptations may be resorted to without departing from the scope of the appended claim.

What is claimed is:

An ice drill comprising a yoke having a pair of elongated spaced apart parallel legs, a one piece fiat circular horizontal plate secured to the lower ends of said legs adjacent the peripheral edge of said plate, said plate having an axial bore formed therein, a triangular cut ting blade projecting through said bore and fixedly secured to said plate, said plate having a diverging slot communicating with said bore and opening through the peripheral edge of said plate, a block fixedly secured to said plate adjacent one edge of said slot and having the side toward said slots sloping outwardly away from said slot, a second blade having a plurality of spaced parallel slots formed therein, means engaged through said slots in said second blade detachably securing said blade to said bolck for adjustment thereon with said blade projecting through the diverging slot in said plate terminating below said plate, and a cutting edge on the lower end of said blade with said cutting edge arranged parallel to said plate.

References Cited in the file of this patent UNITED STATES PATENTS 232,041 Knopp Sept. 7, 1880 2,393,282 Berlin Jan. 22, 1946 2,575,239 Stephens Nov. 13, 1951 2,723,835 Reese et a1. Nov. 15, 1955 

